Data Transmission Method and Device

3. The method according to claim 1, wherein the respective indication information of each logical channel is comprised in an indication field of respective logical channel configuration information of the each logical channel.

4. The method according to claim 3, wherein the respective logical channel configuration information of the each logical channel is a respective radio resource control (RRC) information element of the each logical channel, and the RRC information element of the each logical channel is used for configuring channel parameters of the each logical channel.

6. The method according to claim 1, wherein the duplicated data is duplicated data obtained by duplicating a same one packet data convergence protocol (PDCP) protocol data unit (PDU) by a PDCP split carrier.

7. The method according to claim 1, wherein carrying the duplicated data on the plurality of logical channels is preconfigured by a higher layer signaling.

8. The method according to claim 7, wherein the high layer signaling is a radio resource control (RRC) signaling.

11. The device according to claim 9, the respective indication information of each logical channel is comprised in an indication field of respective logical channel configuration information of the each logical channel.

12. The device according to claim 11, wherein the respective logical channel configuration information of the each logical channel is a respective radio resource control (RRC) information element of the each logical channel, and the RRC information element of the each logical channel is used for configuring channel parameters of the each logical channel.

14. The device according to claim 9, wherein the duplicated data is duplicated data obtained by duplicating a same one packet data convergence protocol (PDCP) protocol data unit (PDU) by a PDCP split carrier.

15. The device according to claim 9, wherein carrying the duplicated data on the plurality of logical channels is preconfigured by a higher layer signaling.